Center letter: n
Outer letter: a k m o r w
Answers (35):
  workman
  workwoman
  anon
  anorak
  know
  known
  koan
  krona
  kronor
  mammon
  manna
  manor
  maroon
  moan
  monk
  mono
  moon
  morn
  moron
  mown
  naan
  nana
  narrow
  nonwork
  nook
  noon
  norm
  rank
  roan
  rowan
  wanna
  warn
  woman
  wonk
  worn